What about whiteners? Safety concerns explored.
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D000077463:Carbamide Peroxide; D004338:Drug Combinations; D005609:Free Radicals; D006801:Humans; D006861:Hydrogen Peroxide / Q000009:adverse effects*; D010100:Oxygen / Q000737:chemistry; D010545:Peroxides / Q000737:chemistry; D012449:Safety; D014073:Tooth Bleaching; D014508:Urea / Q000031:analogs & derivatives / Q000737:chemistry
D004338:Drug Combinations; D005609:Free Radicals; D010545:Peroxides; D000077463:Carbamide Peroxide; D014508:Urea; D006861:Hydrogen Peroxide; D010100:Oxygen